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Mineral Resources > Online Spatial Data > Geology > by state > Louisiana

Williamson Creek Member

white to gray silts, siltstones, silty clays, and sand beds; some lenses of black chert gravel.
StateLouisiana
NameWilliamson Creek Member
Geologic agePhanerozoic | Cenozoic | Tertiary | Miocene
Original map labelMfw
CommentsMember of the Fleming FM.
Primary rock typesilt
Secondary rock typesiltstone
Other rock typesclay or mud; sand; gravel
Lithologic constituents
Major
Sedimentary > Clastic > Siltstone (Bed)
Unconsolidated > Fine-detrital > Silt (Bed)
Minor
Unconsolidated > Coarse-detrital > Gravel
Map references
United States Geological Survey, 1998, Digital Overlay of the Geologic Map of Louisiana: U.S. Geological Survey, Biological Resources Division, National Wetlands Research Center, Product Id USGS-NWRC 1984-02-0001, http://www.nwrc.usgs.gov/.
Unit references
United States Geological Survey, 1998, Digital Overlay of the Geologic Map of Louisiana: U.S. Geological Survey, Biological Resources Division, National Wetlands Research Center, Product Id USGS-NWRC 1984-02-0001, http://www.nwrc.usgs.gov/.
Geographic coverageRapides - Vernon

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URL: http://mrdata.usgs.gov/geology/state/sgmc-unit.php?unit=LAMIfw;0
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